[cvs-nhc98] Omit un-matched double quote on filename when showing an I

malcolm: Wed Mar 5 16:44:23 CET 2003 Update of /usr/src/master/nhc/src/prelude/PreludeIO In directory hinken:/tmp/cvs-serv12380 Modified Files: Show_IOError.hs Log Message: Omit un-matched double quote on filename when showing an IOError.